Time-switch for lighting-circuits.



, 11. Brr-DEBER, H. BRNNLE & c; w. REICH.

' TIME SWITCH ROB LIGHTING CIRCUITS.

uPLIoATIoNIILED ooT.11,191o.

Patented 3,1912.

I R. BUIIBIIIIR, II. BRUNIILB IIa-w. REICH.

TIME SWITCH Pon LIGHTING CIRCUITS. f

Anm-0111011 FILED 00117, 1910.

' vPatented Dec. 3,1912.

s sums-SHEET n.

R. BUDERER, H. BRNNLE @L o. WIIRBIGH.

TIME SWITCH POR LIGHTING CIRCUITS. l

APPLICATION FILED 0UT.17, 1910.

Patented Dec.(3,191`2.

SHEETS-SHEET 3.

UNITED sTATEs PATENT oEEioE. g

RUDOLF BUDEEER, HERMANN BENNLE, AND CARL WILHELM EErcH, E STUTTGART,

- GERMANY.

TIME-SWITCH FOR LIGHTING-CIRCUITS.

Specification of Letters Patent.

Patented Dec. 3, 1912.

Application filed October 17, 1910. Serial No. 587,638.

' in which full lightis supplied for a predetei-mined period with automatic ignition and extinction while at the end of the said period' lights are provided for the necessary time in store-rooms, cellars and so forth as may be y required. Further, the current is completely shut oif in daytime.

The improvement consists in that all the arrangements are controlled without the use of a transmission gear but solelythrough a clockwork. y

Time switches have previously been -operated without a transmission gear but these provide only the means for automatically ighting and extinguishing the lamps and no provision was made for preventing the use of the device during daytime. This is a serious objection in such apparatus where now and then" a lamp is required for a short time such as on stair cases where the lamp on being lighted by hand, burns for 3 or 4f minutes and then becomes automatically ex-` tinguished. To p prevent unauthorized use during' daytime with an arrangement of this kind, the time switch according to this inventlon is constructed in such a manner that the current is automatically shut oi' during daytime, the circuit being closed again at ni ht time. 'According to this invention,

thls is eli'ccted with a single clockwork whichv latter also controls the intermediate 3 or 4 minutes service. This clockwork, has contrivances such as adjustable eccentric contact arms and the like for operating the various mechanisms, said contrivances being well knownby themselves.

The time-switch is contrived by fitting upon a single part of :1.24 hour clockwork a plurality of devices for igniting Athe lamps, extinguishing same and for interrupting and reclosing the circuit at predetermined periods. The said devices `may advanta geously be driven by eccentric disks which execute one complete revolution in 24 hours. The eccentric disks are all mounted upon the axle of the hand of the clockwork whereby the operation is greatly simplified.

An embodiment of the invention is shown in the accompanyingdrawings, in which- Figure 1 is a front elevation of the time switch. Fig. is the same with the hour dial removed. Fig. 3 is a rear elevation. Fig. 4 is a side elevation. Fig. 5 is diagram of a circuit. Figs. 6 to 8 show the operating disks or eccentrics.

The time switch is driven only by .means of theordinary clockwork l (Fig. 4) which is provided with the rordinary dial. 2 (Fig. l), the pointers 3, and with an hour-dial i advantageously divided into 'twice twelve hours for day and night. In the dial'll are fitted time-disks 5, 6 and 7 for setting the time for lighting, for extinguishing and for daily interruption of the circuit. These disks are connected with hollow shafts f( Fig. '2) mounted one upon another on the clock arbor S, the disks having graduations and 'being adapted to be turned so as to bring one of their graduations exactly under the number of the dial 4.

Two circuits a. and (Fig. 5) are so arranged in connection with a source of elcctricity 9 as to alternately iight the lamps lo according to the position of the contact lever .1.6. The circuit a serves for continuous v tionary in such a position vuntil it is againv actuated. The lever 1l `works in conjunction with.r 'tsm contact springs lei and l5 (Fig. 3) for 'which purpose a Contact lever 1G is provided which has a contact nipple 17. rllhis nipple slides upon the springs 14 and and so keeps the contacts always bright. The contact springs 14 and 15 are at the middle so far apart from each other that the contact 17 in its middle position is nowhere in contact and completely cuts oft the current. In this position a suitable locking spring 13 retains it by reason of its triangular shape. A

The lever 11 is suitably reversed for each purpose by the levers 19, 2O and 21 (Fig. 2). These levers are loosely mounted on the pivot pin 13 of the lever 11 and they are under the influence of springs made to bear with their pins 25 against cams 22, 23 and 24 which have notches 45 (Figs. 6 8) and which are suitably connected with the axles of the time disks 5, 6 and 7. The other ends of said levers act on pins 46 of the lever 11.

The operation is as follows z-As an example it will be presumed that regular light is required from 8 to'11 oclock every night, and at times only from 11 p. In. to 3 a. m. after which the circuit is completely interrupted. For this purpose thev disk 5 is set for 8 p. In. the disk 6 for 11 p. m. and the disk 7 for 5 a. m. lVith the turning in unison of the reversing disks 22, 23 and 24, at 8 p. m., the pin 25 of the lever 19 drops into the recess 45 of the disk 22 and the lever 11 will then he brought into the position shown in Fig. 2 with the contact piece 17 resting on the spring 14 (Fig. 3). rlhis closes -the circuit; for the regular light (Fig. 5) through the conducting casing and the pivot pin 13 of the pawl 11 (Fig. At the further rotation of the reversing disks, the pin 25 oi the lever 19 is withdrawn Jfrom the recess of the disk 22 but the lever 11 remains in the same position. At 11 p. m. the lever (Fig. 2) is through its spring drawn with its pin 25 into the corresponding recess 45 of the reversing disk 23 and the le ver 11 is thereby turned in the opposite position e., the contact 17 (Fig. slides ott the contact spring 14 and onto the contact spring 15 so that the arrangement for a 3- minutes service is now established, the action of which will be hereinafter described. At 3 a. m. the lever 21 (Fig. 2) is reversed in the same manner and brings the lever 1l into the middle position so that the circuit is completely interrupted.

For the non-regular lighting of the lamps from 11 to 3 oclock, there is interpolated in .the circuit b (Fig. 5) a solenoid 26 (Fig. 3)

with axially moving core 27 which by the action of the current is moved into the solenoid 2G. The core 27 is furnished with a bar 28 fitted with a pin 29 which at the inwardmovement of the core 27 strikes against the contact lever 30 which is turn-able on the pin 31 and is controlled by a contact spring 32. The free end of the lever 30 has a con tact piece 33 which passes over 'a contact spring 34 and so closes the circuit while at the same time the contact parts are constantly rubbed bright. The contact lever 30 is fitted with a hook 12 which works in conjunction with the hook 35 oi' a bel'lcra-nk pivoted on a pin 36 (Fig. 4) and swinging with its arm 37 in the path of a second pin 38 of the bar 2S. Thelatter is fitted with a lever 39 loosely mounted on the spindle 40 of a ratchet 41 which is rotated by the clockwork at a speed such that the core 27 is drawn out of the solenoid 2G by the spring 42 at a rate such that its pin 33 moves lever 35-37 and releases contact 33 atthe end of a predetermined interval of time after the push-button 44 has been released; in this movement, the pawl 43 follows the wheel 41, as the latter rotates (contra-clockwise in Fig. 3), to the limit oi motion of the core 27, said pawl 43 being on the lever 39.

The action is as follows :Mly pressing one of the pushes 44, the solenoid 26 over the contacts 15 is excited and the core 27 draws inward. Hereby the Contact lever 30 through the intervention ot' the pin 29 is caused to close the contact 33, 34 and also the lamp circuit and is locked in this position by the hooks 12, At the same time the pawl-lever 39 has moved and cannot swing' back by reason of the engagement of the pawl 43 with ratchet 41. .When the latter turns, the pawl-lever 39 follows by reason of the action of spring 42 and thus draws the core 27 out of the solenoid 26.A This causes the pin 29 to move away i'roln the contact lever 30 and the pin 33 gradually turns the arm 3T of the bellcrank until after 3 or 4 minutes the contact-lever 30 is disengaged and moved back by its spring 32 whereby the contact 33, 34 and thelamp`cir cuit is opened. i

1. A time switch for lighting circuits comprising in combination with the circuit for regular lighting the lamps, a circuit for predetermined periodical lighting, a single clockwork, adjustable cams operating from said clockwork, a lever for controlling the .regular lighting operated by said cams, a lever for controlling the lighting at, predetermined periods operated by said cams and a lever operated by said cams andserving for interrupting circuit in daytime and' preventing unauthorized lighting of thu lamps. substantially as described and shown and for the purpose set forth.

A time switch comprising in combination with the conduits for regular lighting, a circuit Jfor predetermined periodical lighting, a single clockwork, adjustable cams operated from said clockwork, three levers acted upon by said cams and a switch consisting or' n pziwl which automatically stops in ln witness whereof we have hereunto set; lo

its two end positions one of Wli'ioli closes tlie our hands in tlie presence of two witnosges.

. s. -i 0' (y i y i i (ntiiit foi itgnlii linlitnih intl tlie otliti RUDOI BUDERIJR for pre-determined periodical lighting, tlie 5 initlclle position of Said pawl interrupting tlie Circuit completely, stud ptiwl being HERMANN BRNNLE. CARL Wriiiiuiii'i union.

moved into the various positions by means ll'itnesses: of said levers, substantially :is described :incl From KLAiEii, shown and for the purpose set forth. f IAiiiiiwn KLANN'm 

